Paraxylene PX (cas 106 42 3) is obtained by selective adsorption from a mixture of hydrocarbons, consisting mainly of C8 aromatics isomers.
Appearance: Colorless, clear liquid with a characteristic aromatic, sweet odor.
Boiling Point: 138.35 °C
Melting Point: 13.26 °C
Density: ~0.861 g/cm³ at 20°C

Applications of Paraxylene/p-Xylene
CAS 106-42-3 Paraxylene is widely used as a feedstock (or "building block") to manufacture other industrial chemicals, notably terephthalic acid (TPA), purified terephthalic acid (PTA) and dimethyl-terephthalate (DMT).
| Key Uses | Main Application Areas |
| Raw material for PTA (Purified Terephthalic Acid) | – Production of PET (Polyethylene Terephthalate) |
| Primary component of PET (Polyester) | – Beverage bottles, food packaging, plastic films (transparent, durable, recyclable) |
| Production of polyester (PET fibers) | – Clothing, home textiles, industrial fabrics (wrinkle-resistant, durable, versatile) |
| DMT (Dimethyl Terephthalate) | – Alternative monomer for polyester production |
| PIA (Isophthalic Acid) | – PET resin modifier (enhances durability and performance) |
| High-performance specialty polymers | – Engineering plastics such as PBT (Polybutylene Terephthalate) |
| Solvents and chemicals | – Paints, coatings, adhesives, inks |
| Agricultural chemicals | – Production of pesticides and fertilizers |
| Fundamental raw material in material science | – From everyday plastic bottles to advanced engineering plastics, shaping modern life |
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